[Compatibility]: This rotary battery disconnect switch is designed for use with top terminal and negative terminal batteries. Maximum current: 500A, rated current: 100A. Compatible with 6V, 12V, and 24V batteries used in cars, trucks, buses, RVs, boats, and trailers. [Top Heavy Duty]: Constructed from high-quality materials, this rotary battery disconnect switch offers reliable conductivity and safe operation. [Easy to Install]: Knob-type design allows for straightforward installation and operation. [Power Saving]: This blade-type main switch provides battery isolation and protects electrical systems by cutting off power when the vehicle or vessel is not in use, preventing battery drain and unauthorized use. [Widely Used]: Suitable for use in cars, trucks, boats, and RVs. Can also function as a switch for various added electrical devices such as flashing lights, chassis lights, fog lights, roof lights, and other equipment. Note: Installation guide not included. Professional installation is strongly recommended. Please verify the specifications to ensure compatibility. Tips: Product design may vary slightly between batches, including minor differences in color or appearance, which do not affect functionality. Color: Black Material: Plastic Package Contents: 1 x Universal Car Battery Disconnect Switch (other items not included) Note: Lighting and display differences may cause slight color variation between the image and the actual item. Measurement tolerance: +/- 1-3 cm.